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Service bulletins for the 2020 Mazda Mazda3

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

726 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
SA-017-22c2022-11-04. Service bulletin. ELECTRICAL SYSTEM. Some customers may complain about any of the following: * Infotainment Center Display does not provide the Authorization Code during the MyMazda App Connected Vehicle enrollment. * Remote function(s) inoperative. - Engine Start / Stop - Door Lock / Unlock - Lights ON / OFF * MAZDA CONNECT connected vehicle reception strength icon shows "X" or " "
SA-004-22f2022-11-04. Service bulletin. ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
07-004-222022-10-06. Service bulletin. ELECTRICAL SYSTEM. Some customers may complain that after accelerating in hot weather, the A/C blows warm air for a longer time than other models. This is caused by improper control software of the PCM not allowing the A/C compressor to resume properly after acceleration. To eliminate this concern, the control software of the PCM has been modified.
SA-061-222022-10-06. Service bulletin. ELECTRICAL SYSTEM. The Blind Spot Monitoring (BSM) system can malfunction with the following symptoms if the rear side radar sensors are installed facing the wrong direction. - BSM system indicates vehicle on the opposite side. - i-ACTIVSENSE indicator ring will not turn green - Rear Cross Traffic Alert (RCTA) does not work - Rear side radar sensor
SA-004-22e2022-10-06. Service bulletin. ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
SA-004-22d2022-09-06. Service bulletin. ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
SA-017-22b2022-09-06. Service bulletin. ELECTRICAL SYSTEM. Some customers may complain about any of the following: - Infotainment Center Display does not provide the Authorization Code during the MyMazda App Connected Vehicle enrollment. - Remote function(s) inoperative. - Engine Start / Stop - Door Lock / Unlock - Lights ON / OFF - MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". Confirm the customer's phone and vehicle have good to strong reception during the concern as shown in the table below. - If the reception is weak, move the vehicle to a location where the reception is good to strong as shown in the table, then try to get the Authorization Code and/or operate the remote functions before proceeding to the Repair Procedure if there is still an issue. - If the reception is good to strong, proceed to the Repair Procedure.
16-004-222022-09-06. Service bulletin. ELECTRICAL SYSTEM. Some customers may complain that Mazda Connect does not start or that it takes a long time to restart after starting the vehicle. This is caused by the initialization process with the CMU failing at startup due to a defective circuit board element. To eliminate this concern, the internal hardware of the CMU has been improved.
16-001-22c2022-09-06. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 7000C0A-NA01_12002 or later).
09-034-222022-09-06. Service bulletin. ELECTRICAL SYSTEM. Some customers may complain about a fuel gauge that fluctuates to a higher level at a stop on inclines, even after a long drive since it was fully refilled. This is caused by improper control software of the body control module (BCM). To eliminate this concern, the control software of the BCM has been modified.
09-027-222022-09-06. Service bulletin. ELECTRICAL SYSTEM. When replacing the body control module (BCM), some ECUs may need reprogramming. Without reprogramming the concerned ECUs, the power saving function may not work properly.
01-009-222022-09-06. Service bulletin. ELECTRICAL SYSTEM. Some customers may experience a no start because the battery is discharged after the vehicle is parked for more than 8 hours. This may be caused by one or more of the following, resulting in excessive parasitic draw (dark current) on the battery. 1. The vehicle control system may not have gone to sleep because a key fob was left in the vehicle after the ignition switch was turned off and the doors were closed. This is caused by improper BCM control logic which allows a higher parasitic draw (approx. 6A) to continue for approximately 6 minutes until the vehicle control system goes into sleep mode. If the doors are operated frequently for car washing or luggage loading/unloading etc., it prevents the vehicle control system from sleeping during that time. 2. The parking lights may have been left on because the warning sound for lights on is a short ding, and it may not be noticed. 3. [With Full-Auto A/C] The climate control unit may not have gone to sleep because the hazard warning switch was pressed after the ignition was turned off. This is caused by improper control logic of the climate control unit. To correct these concerns: 1. The control software of the body control module (BCM) has been modified to shorten the time until going into the sleep mode to approximately 2 minutes. 2. The control software of the body control module (BCM) has been modified to change the lights on warning sound to a continuous one. 3. The control software of the climate control unit has been modified.
15-004-222022-07-06. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. Some vehicles may exhibit the warning messages "Safety and Driver Support Systems Temporarily Disabled" or "Front Radar Obscured. Drive Safely." displayed in the instrument cluster despite no dirt on the front radar sensor while driving in specific locations as follows: - Roads with continuous elevated road ways on one side or tall walls on one side - Inside tunnels with an overall rounded shape - Roads with no reflective objects around This is caused by inappropriate decision logic of the control software in the front radar sensor. To eliminate this concern, the control software of the front radar sensor has been modified.
01-006-222022-07-06. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides testing and charging procedures in order to promote proper battery maintenance, to deliver new vehicles with fully charged batteries, and to reduce unnecessary battery replacement cost. For new vehicles in stock at the dealer, inspect and maintain the battery periodically according to the repair procedure.
SA-039-222022-07-06. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT; UNKNOWN OR OTHER. Some customers may complain about scratches on the instrument cluster lens.
SA-004-22c2022-07-06. Service bulletin. ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
16-001-22b2022-06-04. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 7000C0A-NA01_12002 or later).
16-001-22a2022-06-04. Service bulletin. ELECTRICAL SYSTEM. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 7000C0A-NA01_12002 or later).
09-019-222022-06-04. Service bulletin. ELECTRICAL SYSTEM. Some customers may experience one or both of the following symptoms while locking and unlocking the doors works fine using the remote transmitter. * Symptom 1: The touch sensor of the front door outer handle does not lock the doors after rain and/or car washing, even though unlocking is possible. * Symptom 2: The touch sensor of the front door outer handle does not unlock the doors. * Cause 1 (for Symptom 1): Water may accumulate around the touch sensor in the outer handle, resulting in temporary lower sensitivity of the capacitive sensor. Also, if car wash foam gets inside the outer handle while washing the vehicle, the foam may disturb the touch sensor detection. Mazda is still working on a mass production change for this concern. * Cause 2 (for Symptom 2): Improper soldering in the production process may disturb the touch sensor detection. To eliminate this concern, the production process has been modified.
SA-034-222022-06-04. Service bulletin. ELECTRICAL SYSTEM. When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate the new TCU after replacement. Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated.
SA-028-222022-06-04. Service bulletin. EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE; ELECTRICAL SYSTEM. Qi Wireless Charger Symptom Troubleshooting
SA-017-22a2022-06-04. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT; EXTERIOR LIGHTING:HEADLIGHTS; LATCHES/LOCKS/LINKAGES:DOORS:LOCK; ELECTRICAL SYSTEM. Some customers may complain about any of the following: *Infotainment Center Display does not provide the Authorization Code during the MyMazda App Connected Vehicle enrollment. **Remote function(s) inoperative. **Engine Start / Stop **Door Lock / Unlock **Lights ON / OFF *MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". Confirm the customer's phone and vehicle have good to strong reception during the concern as shown in the table below. **If the reception is weak, move the vehicle to a location where the reception is good to strong as shown in the table, then try to get the Authorization Code and/or operate the remote functions before proceeding to the Repair Procedure if there is still an issue. **If the reception is good to strong, proceed to the Repair Procedure.
SA-004-22b2022-06-04. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM. Customers having MAZDA CONNECT concerns should have their vehicle repaired using the following repair procedure.
SA-026-222022-05-05. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Apple CarPlay / Android Auto Frequently Asked Questions (FAQs)
SA-025-222022-05-05. Service bulletin. ELECTRICAL SYSTEM. Some customers may experience infotainment door rattle noise. Follow the repair procedure to help determine the cause.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.